Rotary anvil for stapling machines



Oct. 6, 1931. R. E. PETERSON V ROTARY ANVIL FOR STAPLING MACHINES FiledJune 12, 1929 gwuentoz duo: 11444 5 disclosed in connection 7 PatentedOct. 6, 1931 N TED STATES PATENT OFFICE.

ROY E. PETERSON, OF EAST NOR'WALK, CONNECTICUT, ASSIGNQR '1'0- H.HO'ICH- COMPANY, OF NOB'WAIIK, CONNECTICUT,

ROTARY ANVIL Ii'OR Application filed June 12,

' This invention relates to stapling machines and has for an object toprovide easily adjustable means for setting the staples in differentmanners.

It isa further object of the invention to provide an adjustableclinching means or anvil which has a means for indicating the particulartype of clinching surface that is in operative position.

to provide a clinching means or anvil that is quickly and easilyremovableand replaceable in the stapling machine, whereby additionalanvils having different types of clinching surfaces may be substitutedat will.

With the foregoing and other objects in view, the invention consists incertain novel features of construction, combinations and arrangements ofparts as will be more fully with the accompanying drawings.

In the drawin 1 is a partial side elevation and partial section showinga stapling machine having my. easily adjustable and removable clinchingmeans.

Fig. 2 is a front elevation thereof.

--Fig. 3 is a fragmentary front elevation partly broken away showing.one type of clinching surface in operation.

\ Fig. 4 is a similar view showing another type of clinching surface.

Fig. 5, is apartly broken fragmentary section showing the means forholding the anvil with a desired surface in operative position.

Figs. 6 and 7 are front elevations of the anvil showing the difl'erenttypes of clinching surfaces and the indicating means thereon.

Fig. 8 is a section through the anvil on line 8-8 of Fig. 6. p

Themachine illustrated comprises the usual base 10 to which is pivotedthe housing 11 as at 12. The housing carries the usual verticallyreciprocating plunger 13, which is operated by aknob 14 at its upper endby a blow from the hand, and is normally held in its upper position by aspring 15 either outside or wi hin the housing as desired.

The staples 16 which are substantially It is an additional object ofthis invention 2 A conromrron or commcrxcur surnme moms 1929. Serial No.370,342.

U-shape are preferably of wire either round or somewhat flattened andare fed in an inverted position with their prongs downwardly along thetop of the guide bar 17 by means of an inverted U-shaped follower 18drawn forward by a spring 19 to feed the staples successively to theposition for drivmg under the plunger. The base 10 carries a block 20divided lnto two parts 21 by a circular oove in which the rotary anvil22 is placed or operation. A pin 23 is fitted in an opening through theblock 20 and passes through an annular groove 24 in the anvil 22 andserves to retain the anvil in place, but leaves it free for rotatlon. Ifdesired, the pin 23 may be removed thereby permitting the anvil 22 to beremoved and replaced. On the anvil 22 are a plurality of clinchingsurfaces 25, 26 and 27 of difierent types, and although only these typesare shown, additional types may be likewise placed thereon if serve ascatches for the yieldable detent 29,

desired. Depressions 28 which comprises a ball and'spring, placed in thebase 10 beneath the anvil. On the handle 7 portion 30 of the anvil 22are placed indications 31 in line with the various clinching surfacesand serveto show the particular surface in operative position. Thus, at25 is shown the light duty clinching surface indicated at 31 by theletter L, at 26 is the heavy duty surface indicated by H and at 27 thetemporary duty surface at T for turning the prongs in one directioninstead of opposite directions. For example the light duty surfaces maybe used with staples of thinner stock, while the heavy duty recesses maybe used with staples of heavier stock. In both these arrangements therecesses are positioned to bend both prongs of the staples inwardlytoward each other for a permanent attaching. In the arrangement of thesurfaces shown at 27 both prongs of the staples are bent in the samedirection as shown in Fig.4, that is inwardly from one side andoutwardly from the other. This is for more or less temporary work as astaple set this way is easier to remove than one set with both prongsbent inwardly.

In operation the articles to be stapled, such i as the sheets of paper32, are placed on the block 20 over anvil 22, which has been ro-' tateduntil the indication 31 shows that the desired clinching surface is inoperative position, and under the forward end of the housing afterraising the housing. The forward end of the housing thus rests on top ofthe paper, and when the plunger is depressed by a blow on knob 14 theprongs of the staple are forced through the paper and ends engage in theparticular clinching sur-' face then in operative position and are set,

accordingly. 1 v

Having thus set forth the nature. of my invention, what I claim is:

1. In a stapling machine, a base, a housing pivoted to the base, amovable plunger in the housing, means for operating the plunger, arotatable anvil in said base having a plurality of different clinchingsurfaces located about its longitudinal axis to cooperate with theplunger in setting staples, and means to mount said anvil with itslongitudinal axis extending transversely of the base and to rotateabout, said longitudinal ans.

2. In a stapling machine, a base, a hous ing pivoted to the base, amovable plunger in the housing, means for operating the plunger, and arotatable cylindrical anvll mounted in said base with its axis extendingtransversely of the base and also mounted to turn about its/axis, saidanvil having a plurality of different staple clinching surfaces thereinlocated about said axis.

3. In a stapling machine, a base, a housing pivoted to the base, amovable plunger in the housing, means for operating the plunger, arotatable cylindrical'anvil in said base, said anvil having a pluralityof pairs of different staple clinching surfaces therein positioned aboutits longitudinal axis and extending longitudinally thereof, the surfacesof eacltpair adapted to engage the prongs of a substantially ll-shapedstaple and bend them indifferent ways, and means for rotating said anvilabout said axis to place a desired pair of clinching surfaces inoperative I position.

4. In a stapling machine, abase, a housing pivoted to the base, amovable plunger in the housing, means for operating the plunger, ananvil extending transversely of said baseand rotatable about alongitudinal axis, said anvil having a plurality of different clinchingsurfaces therein, means for rotating said anvil to place a desiredclinching surface in operative position, and means for retaining saidanvil in a desired'operative position. i

5. In a stapling machine, a base, a housing pivoted to the base, amovable lunger in the housing, means for operating tiie plunger,

'a rotatable anvil with its longitudinal axis extending transversely ofsaid base, said anclinching surfaces therein, means indicatmg thepartlcular clinching surface .in operative position, means for rotatingsaid anvil about said axis to place a desired clinchin surface inoperative position, and means or retaining said anv1l in a desiredoperative position. o

6. In a stapling machine, a base, a housing pivoted to the base, amovable lunger in the housing, a removable cylindrlcal anvil ro-' vilhaving a plurality of different staple anvil housing in said base and aremovable said base, said anvil havinga plurality of staple clinchingsurfaces and corresponding indications about said axis.

8; In a stapling machine,)a base, a housing- I pivoted to the base, amova 1e plun er in the housing, means for operating. th .plunger,

an anvil housing with its longitudinal axis extending transversely ofsaid base, a rotatable anvil in said anvil housing mounted to rotateabout said axis, and means for removably "retaining said anvil in saidhousing 9. In a stapling machine, a base, a housing pivoted to the base,a movable lunger in the housing, means for operating the plunger, ananvil housing in said'base, a rotatable anvil mounted in said anvilhousing with its lontudinal axis extending transversely of said ase,means for removably retaining said preventing said anvil from rotating.

' 10. In a stapling machine, a base, a housjanvil in said housing, andmeans "yieldably ing pivoted to the base, a movable plunger in thehousing, means for operating the plungenan anvil housing in said base,8. r0- tatable anvil in said anvil housing, and means for removablyretaining said anvil in said housing, said means comprising a pinopening in said anvil housing, an annular groove on said anvil, and apin passing through said opening and into said groove. v

11. In a staplin machine, a base, a housing connected to't e base, amovable plunger in the'housing, means for operating the lunger, arotatable anvil in said base having a plurality of pairs of differentclinching surfaces located about its longitudinal axis and extendinglongitudinally thereof,'said anvil mounted in said anvil housing torotate 1 about its longitudinal axis transversely of.

surfaces being adapted to cooperate with the chines having a pluralityof pairs of diflerent clinching surfaces in' its curved wall adapted forengaging and bending in difi'erent ways the pron s 0 substantially,U-shaped staples, said sur aces being located to extend substantiallylongitudinally of theaxis of the anvil.

13. An anvil for stapling machines adapted to be mounted to turn about alongitudinal axis and having in its surface aplurality of pairs ofdifferent clinchin surfaces adapted to engage and bend in ifierent waysthe prongs of substantially U-shaped staples, said surfaces beinglocated on different sldes of said longitudinal axis and extendingsubstantially longitudinally thereof. 7

In testimony whereofI aflix my signature.

ROY E. PETERSON.

